Washington Gov. Signs Gay Marriage Into Law Christine Gregoire's pen legalizes same-sex marriage By Newser Editors and Wire Services Posted Feb 13, 2012 3:39 PM CST 21 comments Comments Washington Gov. Christine Gregoire raises her arms as legislators and supporters cheer after she signed into law a measure that legalizes same-sex marriage Monday, Feb. 13, 2012, in Olympia, Wash. (AP Photo/Elaine Thompson) (Newser) – Gov. Christine Gregoire handed gay rights advocates a major victory, signing into law a measure that legalizes same-sex marriage in Washington state, making it the seventh in the nation to allow gay and lesbian couples to wed. Gregoire signed the bill surrounded by gay rights supporters. "I'm proud our same-sex couples will no longer be treated as separate but equal," she said. It's a historic moment, but same-sex couples can't walk down the aisle just yet. The law takes effect June 7, but opponents on multiple fronts already are preparing to fight. Opponents planned to file a challenge today that could put the law on hold pending the outcome of a November vote. Separately, an initiative was filed at the beginning of the session that opponents of gay marriage say could lead to the new law being overturned.